title: The v3 loop is accessible on the surface of most human immunodeficiency virus type 1 primary isolates and serves as a neutralization epitope.
mesh_terms: D000595:Amino Acid Sequence; D000911:Antibodies, Monoclonal / Q000276:immunology; D000915:Antibody Affinity; D000939:Epitopes / Q000276:immunology*; D015483:HIV Antibodies / Q000276:immunology; D015699:HIV Envelope Protein gp120 / Q000737:chemistry* / Q000276:immunology*; D015497:HIV-1 / Q000145:classification / Q000276:immunology*; D006801:Humans; D016014:Linear Models; D008969:Molecular Sequence Data; D009500:Neutralization Tests; D012995:Solubility; D014771:Virion / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D015483:HIV Antibodies; D015699:HIV Envelope Protein gp120